If you've ever seen a recipe for cookies that consisted of shades of different colored dough but wrote it off as way too complicated, check out Shirley Fan's variation. The author of the new book The Flying Brownie says these beautiful treats are a snap: divide dough into thirds, dye each piece with food coloring, and stack rounds on top of each other. Cut out shapes using cookie cutters—and there you have it: each cookie has stripes of different-colored dough.